Sportsstuff Crazy 8 Inflatable 2-Rider Towable. Grab a friend and prepare for a wild & crazy tubing experience on the Crazy 8 for two riders. Dual tow points allow sitting in-line or side-by-side for 2 totally different riding experiences. The unique figure-eight design features a heavy-duty double-stitched partial nylon cover and heavy-duty K80 PVC bladder that’s built to last. There are double webbing foam handles with knuckle guards everywhere to accommodate various riding positions. The patented Speed Safety Valve will get your tube inflated and on the water in no time.